42.21.132    MINING EQUIPMENT

History: 15-1-201, MCA; IMP, 15-6-135, 15-6-138, MCA; Eff. 12/31/72; AMD, 1980 MAR p. 1727, Eff. 6/27/80; AMD, 1981 MAR p. 316, Eff. 3/27/81; AMD, 1982 MAR p. 1270, Eff. 7/1/82; AMD, 1991 MAR p. 915, Eff. 6/14/91; AMD, 1994 MAR p. 3195, Eff. 12/23/94; AMD, 2000 MAR p. 3563, Eff. 12/22/00; AMD, 2005 MAR p. 667, Eff. 4/29/05; AMD, 2006 MAR p. 3108, Eff. 12/22/06; REP, 2019 MAR p. 209, Eff. 2/23/19.